ACE24CP02C

I

2

C-Compatible Serial EEPROM

VER 1.1

10

(B)

Random Read

A Random Read requires a “dummy” byte write sequence to load in the data word address. Once the

device address word and data word address are clocked in and acknowledged by the ACE24CP02C,

the microcontroller must generate another start condition. The microcontroller now initiates a Current

Address Read by sending a device address with the read/write select bit high. The ACE24CP02C

acknowledges the device address and serially clocks out the data word. The microcontroller does

not respond with a “0” but does generate a following stop condition (see Figure 10).

(C)

Sequential Read

Sequential Reads are initiated by either a Current Address Read or a Random Address Read. After

the microcontroller receives a data word, it responds with acknowledge. As long as the

ACE24CP02C receives acknowledge, it will continue to increment the data word address and serially

clock out sequential data words. When the memory address limit is reached, the data word address

will roll-over and the Sequential Read will continue. The Sequential Read operation is terminated

when the microcontroller does not respond with a “0” but does generate a following stop condition

(see Figure 11)

Figure10：Random Read

Figure11：Sequential Read